> 1. All media types are 'document centric.'
What I meant is that this is a particular kind of backend API, a very "model-centric" one. Nothing wrong with that, I just don't think this is the one and only kind and thus should take on the generic name.
> 2. If you're transitioning _to_ this kind from some sort of older kind.
Understood. Maybe an approach is to allow for this to specified optionally, with the fallback of being hard-coded if it's not present?